CN201728146U - Variable interval vertical grinding separator for grinding cement - Google Patents
Variable interval vertical grinding separator for grinding cement Download PDFInfo
- Publication number
- CN201728146U CN201728146U CN2010202506689U CN201020250668U CN201728146U CN 201728146 U CN201728146 U CN 201728146U CN 2010202506689 U CN2010202506689 U CN 2010202506689U CN 201020250668 U CN201020250668 U CN 201020250668U CN 201728146 U CN201728146 U CN 201728146U
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- China
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- rotor
- blade
- fixed
- fixed blade
- transmission device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Crushing And Grinding (AREA)
Abstract
The utility model discloses a variable interval vertical grinding separator for grinding cement, which comprises a shell, a transmission device, a rotor, fan blades, fixed blades, a gas outlet and a hopper and is characterized in that the top of the shell is provided with the transmission device, the upper part thereof is connected with the gas outlet, and the inside thereof is provided with the fixed blade; the lower part of the fixed blade is connected with the hopper; the outer side of the upper part of the fixed blade is connected with a cylindrical steel plate; the fixed blade is fixed on the top surface of the shell through the cylindrical steel plate; rotor blades are located in the fixed blades; the outer edges of the upper parts of the rotor blades are connected with a plurality of fan blades; the rotor blades and the transmission device are connected together by a rotating shaft; the lower end of the rotating shaft is connected with the rotor; the rotor is arranged in a circular ring formed by the fixed blades; and the rotor blades are distributed on the circumference according to the demands in manner of variable interval. The utility model has the advantages of small occupied area, investment saving, low power consumption and small noise.
Description
Technical field:
The utility model relates to the vertical mill field of grinding material, is specifically related to a kind of vertical mill separator of change spacing that grinds cement.
Background technology:
At present, vertical mill integrates oven dry, grinding, selects powder, simplified the flow process of granular material preparation, preparing granular material with ball milling compares, have advantages such as floor space is few, reduced investment, power consumption is low, noise is little, have tangible energy saving and emission reduction effects, be widely used in industries such as cement, electric power, metallurgy, nonmetallic ore.As everyone knows, fineness is that the set coarseness of ground prod is the important indicator of ground prod, and the fineness of vertical abrasive dust mill product is by the separator control that is positioned at vertical mill top; Vertical mill separator generally is made up of housing, transmission device, rotor, fixed blade, gas outlet and hopper, and fixed blade is fixed on the housing, and rotor is in the annulus that fixed blade is formed, by the transmission device driven rotary.Grind under the draft effect of material of back through vertical barreling mill apparatus, be dispersed in and form dust-contained airflow in the air-flow, and upwards mobilely enter from the separator bottom at system fan; The dust-contained airflow that enters separator at first is changed direction through fixed blade, big particle in the dust-contained airflow falls into hopper because of stall is separated, air-flow enters rotor again, larger particles is subjected to the rotor action of centrifugal force, further separated opening, fine powder by rotor enters air outlet with air-flow, is captured by the deduster in the system at last, becomes ground prod.But, being subjected to the influence of draft, part does not enter rotor through the dust-contained airflow of fixed blade, and directly by going into air outlet in the slit between rotor and housing, forms short circuit; In this part dust-contained airflow than coarse granule owing to product is sneaked in the separation that can not get rotor, cause product thick excessively.For eliminating the dust-contained airflow short circuit phenomenon, guarantee product fineness, have to reduce the slit between rotor and housing or adopt complicated sealing way, the defective of these sealings is complex structure, manufacturing and installation accuracy height, wearing and tearing are arranged slightly, still there is the dust-contained airflow short circuit, makes product thick excessively, can not solve at all except that the dust-contained airflow short circuit problem.In addition, the product granularity size that vertical mill grinds evenly, narrower particle size distribution, this size distribution helps quickening chemical reaction, cement slurry burnt till with coal dust firing etc. require the consistent situation of particle reaction speed very favourable, so cement slurry and pulverized coal preparation almost all adopt vertical mill to grind at present.But, cement is when making concrete, concrete requires to have early strength, also require to have intensity and long-term strength in mid-term, the granule in the cement produces early strength, and intensity and long-term strength were corresponding medium grains and produced than coarse granule mid-term, be that cement granules needs certain grain composition, could realize the concrete that preparation has each phase intensity, present vertical mill can not grind the cement of this certain grain composition, makes that grinding cement still uses the high ball mill of energy consumption.
The utility model content:
The purpose of this utility model provides a kind of vertical mill separator of change spacing that grinds cement, solved and be subjected to draft to influence the negative pressure of existence from slit between rotor and housing and cause the dust-contained airflow short circuit, product runs thick problem, simultaneously according to the rotor blade different density, the separable cement that goes out qualified grain composition.
The technical solution of the utility model is as follows:
A kind of vertical mill separator of change spacing that grinds cement, comprise housing, transmission device, rotor, fan blade, fixed blade, gas outlet and hopper composition, it is characterized in that: described case top is installed transmission device, and top connects the gas outlet, and inside is provided with fixed blade; Described fixed blade bottom connects hopper, and upper outside connects the cylindrical shape steel plate, is fixed on by the cylindrical shape steel plate on the end face of housing; Described rotor blade is positioned at fixed blade inside, and the outer rim on rotor blade top connects the plurality of fans blade; Rotating shaft connects rotor blade and transmission device; Described rotating shaft lower end is connected to rotor, and rotor is in the annulus that fixed blade is formed.
Described fan blade is face in the shape of a spiral, with rotor blade junction level the circumferencial direction symmetric arrangement is installed.
The end face certain distance of end distance housing on the described fixed blade.
Space and cylindrical shape steel plate that described fan blade extend between the end face of fixed blade upper end and housing are at regular intervals.
Described rotor blade becomes spacing as required and distributes on circumference.
During the utility model work, rotor is by the transmission device driven rotary, be installed on the and then rotation of fan blade of rotor blade top outer rim, produce downward thrust, form pressure-fired at the gap location of rotor and housing, thereby stop in the vertical mill from bottom to top dust-contained airflow by flowing into its gap and short circuit behind the fixed blade, in addition, the air-flow that fan blade blows out downwards helps the sedimentation of larger particles in the dust-contained airflow, thereby makes product fineness thinner.Rotor blade 4 arranges that on circumference rule is: the some five equilibriums that circumference are divided into as required symmetries such as 6,8,12, the five equilibrium that big separator is divided can be some more, arrange certain rotor blade in each five equilibrium, the rotor blade spacing is pressed increasing or decreasing and is arranged, each five equilibrium internal rotor blade arrangement unanimity, each blade profile is the angle unanimity radially.The particle combination that the rotor blade of different spacing sub-elects different-grain diameter has reached the product particle grating that cement requires.
The utility model has the advantages that:
The utlity model has that floor space is few, reduced investment, power consumption is low, noise is little advantage.
Description of drawings:
Fig. 1 is a section of structure of the present utility model.
Fig. 2 is the local enlarged diagram of Fig. 1.
Fig. 3 arranges schematic diagram for the utility model rotor blade and fan blade on horizontal plane.
The specific embodiment:
A kind of vertical mill separator of change spacing that grinds cement, comprise housing 2, transmission device 8, rotor 10, fan blade 6, fixed blade 3, gas outlet 9 and hopper 1 composition, transmission device 8 is installed at described housing 2 tops, and top connects gas outlet 9, and inside is provided with fixed blade 3; Described fixed blade 3 bottoms connect hopper 1, and upper outside connects cylindrical shape steel plate 5, is fixed on by cylindrical shape steel plate 5 on the end face of housing 2; Described rotor blade 4 is positioned at fixed blade 3 inside, and the outer rim on rotor blade 4 tops connects plurality of fans blade 6; Rotating shaft 7 connects rotor blade 4 and transmission device 8; Described rotating shaft lower end is connected to rotor 10, and rotor is in the annulus that fixed blade 3 is formed.
Described fan blade 6 is face in the shape of a spiral, with rotor blade 4 junction levels the circumferencial direction symmetric arrangement is installed.
The end face certain distance of end distance housing 2 on the described fixed blade 3.
Space and cylindrical shape steel plate 5 that described fan blade 6 extend between the end face of fixed blade 3 upper ends and housing 2 are at regular intervals.
Described rotor blade 4 is installed several according to needs and is symmetrically distributed on circumference.
Claims (3)
1. vertical mill separator of change spacing that grinds cement, comprise housing, transmission device, rotor, fan blade, fixed blade, gas outlet and hopper composition, it is characterized in that: described case top is installed transmission device, and top connects the gas outlet, and inside is provided with fixed blade; Described fixed blade bottom connects hopper, and upper outside connects the cylindrical shape steel plate, is fixed on by the cylindrical shape steel plate on the end face of housing; Described rotor blade is positioned at fixed blade inside, and the outer rim on rotor blade top connects the plurality of fans blade; Rotating shaft connects rotor blade and transmission device; Described rotating shaft lower end is connected to rotor, and rotor is in the annulus that fixed blade is formed.
2. the vertical mill separator of change spacing that grinds cement according to claim 1 is characterized in that described fan blade face in the shape of a spiral, with rotor blade junction level the circumferencial direction symmetric arrangement is installed.
3. the vertical mill separator of change spacing that grinds cement according to claim 1 is characterized in that described rotor blade becomes spacing as required and distributes on circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202506689U CN201728146U (en) | 2010-07-07 | 2010-07-07 | Variable interval vertical grinding separator for grinding cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202506689U CN201728146U (en) | 2010-07-07 | 2010-07-07 | Variable interval vertical grinding separator for grinding cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201728146U true CN201728146U (en) | 2011-02-02 |
Family
ID=43519304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202506689U Expired - Lifetime CN201728146U (en) | 2010-07-07 | 2010-07-07 | Variable interval vertical grinding separator for grinding cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201728146U (en) |
-
2010
- 2010-07-07 CN CN2010202506689U patent/CN201728146U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |
|
| CX01 | Expiry of patent term |